CVE-2021-32661
What it is
Backstage is an open platform for building developer portals. In versions of Backstage's Techdocs Plugin (`@backstage/plugin-techdocs`) prior to 0.9.5, a malicious internal actor can potentially upload documentation content with malicious scripts by embedding the script within an `object` element. This may give access to sensitive data when other users visit that same documentation page. The ability to upload malicious content may be limited by internal code review processes, unless the chosen TechDocs deployment method is to use an object store and the actor has access to upload files directly to that store. The vulnerability is patched in the `0.9.5` release of `@backstage/plugin-techdocs`.
At a glance
- Exploitability
- Can be exploited over the network with an admin-level account, but needs a user to act. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 1.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 1.2% in the next 30 days (EPSS).
- Severity: 6.8 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 1.2% · EPSS, next 30 days
- Weakness
- CWE-77 · Command injection
- Record status
- Modified
Affected
- Linuxfoundation \@backstage\/plugin-techdocs < 0.9.5
Attack profile CVSS 3.1 · 6.8
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2021-32661.md and follow it. Check whether this project is affected by CVE-2021-32661. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/backstage/backstage/commit/aad98c544e59369901fe9e0a85f6357644dceb5c
- https://github.com/backstage/backstage/releases/tag/release-2021-06-03
- https://github.com/backstage/backstage/security/advisories/GHSA-gg96-f8wr-p89f
- https://github.com/backstage/backstage/commit/aad98c544e59369901fe9e0a85f6357644dceb5c
- https://github.com/backstage/backstage/releases/tag/release-2021-06-03
- https://github.com/backstage/backstage/security/advisories/GHSA-gg96-f8wr-p89f
References
- https://github.com/backstage/backstage/commit/aad98c544e59369901fe9e0a85f6357644dceb5c
- https://github.com/backstage/backstage/releases/tag/release-2021-06-03
- https://github.com/backstage/backstage/security/advisories/GHSA-gg96-f8wr-p89f
- https://github.com/backstage/backstage/commit/aad98c544e59369901fe9e0a85f6357644dceb5c
- https://github.com/backstage/backstage/releases/tag/release-2021-06-03
- https://github.com/backstage/backstage/security/advisories/GHSA-gg96-f8wr-p89f